Brass long return oil pipes. Porsche 911 / 930 Turbo 1974-89 › 93020704603

OE Match brass long return oil pipes for Porsche 911 and 930 Turbo applications from 1974–89. The pipework follows the length of the car as part of its engine-oil circuit.

Fits:

• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1975-1977 3.0L Turbo (930)
• Porsche 911 1978-1989 3.3L Turbo (930)
• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50
• Porsche 911 1978-1983 3.0L / SC

Diagram Ref No 11

What This Product Does
The long return pipe provides a route for returning engine oil within the external oil-cooling circuit. It is oil-system pipework, rather than a coolant hose or an internal engine oil-return tube. OE Match develops replacement components around Porsche applications, with attention to original references and vehicle-specific fitment.

Functions

• Carries returning oil through the external circuit.
• Connects sections of the oil system along the vehicle.
• Provides replacement pipework where the original is damaged or leaking.

Technical Details

• Material: brass.
• Configuration: long pipework extending along the car.
• Supplied product reference: 93020704602.
• Internal diagrams identify 93020704601 as the return pipe.
• The same diagrams identify 93020704501 as the intake tube: items 13 (-80) and 14 (81-) for 1978–83; item 13 for 1987–89; items 14 (-85) and 15 (86-) for 1984–86; item 27 for 1974–77; item 22 for Turbo 1975–77.

Symptoms of Fault

• Fresh oil beneath the vehicle or dampness along the pipe.
• Seepage around connections.
• Visible deterioration or damage to fittings.
• Oil odour after driving or smoke where leaked oil reaches hot components.

Why Replacement Matters
Damaged pipework or leaking connections can allow continued oil loss. Replacing a confirmed faulty component addresses the source rather than repeatedly topping up. During inspection, check adjoining connections, seals and supporting hardware; a leaking union does not necessarily mean the pipe itself has failed.

FAQs

How can I identify the leak source?
Clean the affected area and inspect for fresh oil around the connections and pipe body.

Should associated fittings be inspected?
Yes. Check their condition while access is available, particularly where corrosion or previous disturbance is evident.

Does every diagram use item 11?
No. Positions vary with model and production year, so use the applicable diagram and reference details together.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

93020704603

The product you are viewing cross references to these numbers
PLEASE NOTE:
Due to its size, weight or fragility, this item requires additional protective packaging to make sure it reaches you undamaged. A small packing surcharge is applied to cover these specialist materials and the extra care taken preparing your order for transit.